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Embolic stroke: post-thrombectomy MRI

Axial MRI with diffusion-weighted images (DWI; b=1000 images are displayed) shows a punctate focus of diffusion restriction in the right parietal lobe (left image, dashed arrow) and small areas of diffusion restriction in the right basal ganglia (right image, straight arrows). Signal reduction in the corresponding apparent diffusion coefficient map (ADC; not displayed) confirmed these to be areas of acute infarction. However, the majority of the right middle cerebral artery territory is unaffected. (Contributed by Kristine Ann Blackham MD.)

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